Relative to other primates, strepsirhine adaptations include

These primates have retained some primitive mammalian anatomical and behavioral traits, such as a strong sense of smell with an associated longer snout, eyes that are positioned more to the sides of the head, a smaller brain, a distinct breeding season and litters of offspring, nocturnal activity and the ability to synthesis vitamin C.

sunlight, as chloroplasts in the leaves soak up the sunlight and use it as a way to respite.